Machine for scratching and stitch-marking harness-traces.



No. 668,425. Patented Feb. 19, 19!".

J. V. STONE.

MACHINE FDR SGRATGHING AND STITCH MARKlNG HARNESS TRACESZ (Application filed July 12, 1900.

(No Model.)

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ThviTnn STATTs PATENT Orrrcn.

JOHN V. STONE, OF HATTON, NORTH DAKOTA.

MACHINE FOR SCRATCHING AND STITCH-MARKING HARNESS-TRACES.

SPEGIFICATIUN forming part of Letters Patent No. 668,425. dated February 19, 1901.

Application filed July 12, 1900. Serial No. 23,391. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN V. STONE, acitizen of the United States, residing at Hatton, in the county of Traill and State of North Dakota, have invented new and useful Improvements in Machines for Scratching and StitchMarking Harness-Traces, of which the following is a specification.

My invention relates to machines for scratch in g and stitch-marking harness-traces; and one object ofthe same is to provide a machine for this purpose which shall be simple in construction, of comparatively few parts, which may be readily adjusted to scratch and mark traces of different widths, and in which the stitch-markers and scratching-tools may be set to operate at any desired distance from the edge of the trace. I also make provision for marking different lengths of stitches by readily-interchangeable tools.

Other objects and advantages of my invention will appear in the detailed description of the machine.

In the accompanying drawings, which form part of this specification, Figure 1 is a perspective view of a machine made in accordance with myinvention. Fig. 2 is a top plan view. Fig. 3 is a bottom plan view. Fig. 4 is a cross-section on the line 4 4, Fig. 2. Fig. 5

is a perspective view of a trace scratched and marked on a machine made in accordance with my invention.

Like numerals of reference designate like parts in the different views.

In said drawings, 1 1 designate two metal guide-frames, one of which is designed to accommodate the adjustable scratchingtools 2 and the other to perform a like office for the adjustable and interchangeable stitch-mark ingtools 3. These guide-frames are so bstantially identical in structure, and each consists of a box-like frame having an aperture or opening 4 extending nearly from end to end thereof at the top and a slot 5 in the center of the bottom thereof, said slot extending also nearly to the ends of the frame and providing adjustable guideways for the tools 2 and 3. These guide-frames are held in parallel relation by the supporting-bars 6 6, bolted to the frames, as at 7, and attached to a bench or support 8 by clamp-screws 9. These guide-frames have ledges 10 10 at the sides of the slots 5 to provide means for holding the tools steadily in operative position.

The scratching-tools 2 each consists of a pointed end 11, which projects slightly above the guide-frame when in position for use, and the opposite shoulders 12, which fit the ledges 10, and a screw-threaded shank 13 to accommodate a thumb-nut 14, designed to hold the tool in adjusted position in the guide-frame.

The stitch-marking tools 3 each consists of astitch-inarking wheel a, journaled in jaws 3 and projecting slightly above the upper surface of the guide-frame. These tools are also provided with shoulders 12 to fit and slide on the ledges 10 and threaded shanks 13 to accommodate thumbnuts let for adjustment in a similar manner to the scratching-tools.

It is to be understood that the stitch-marking wheels 3 may be replaced by others having the points or teeth set at difierent distances apart for different kinds of work, or to accomplish the same purpose the tools may be replaced by others having wheels of suitablyarranged teeth for Work of varying characters.

The gage-bars 15 each consists of a frame having the upper bars 16, the end bars 17, and the bottom bars 18. These gage-bars slide laterally upon the guide-frames and are held in adjusted position by the set-screws 19, passing through the end bars 17 and hearing against the guide-frames. Arms 20 extend backward from the gage-bars 15, and pivoted at 21 thereto are the presser-feet 22. These presser-feet each consists of an arm 23, pivoted at its end to the arm 20 of one of the gage-bars 15. An offset 24 is formed in the arm 23, and extending downward and forward from the offset is a curved presserfoot 25, which normally bears upon the trace to hold it down upon the tools 2 and 3. 26 are formed upon the arms 23, and a leather thong or band 27 is attached at its opposite ends to these lugs, and a spring 28, attached to the floor, normally holds the presser-feet down upon the trace. A similar thong or band 29, attached to the lugs 26, extends over pulleys 30 and down to a treadle 31, which may be used for raising the presser-feet while the trace is being placed in position for marking.

The operation of my machine is as follows:

Lugs

The gage-bars having been adjusted to conform to the Width of the trace to be marked and the tools 2 and 3 having been set at the required distance from the gage-bars and in alinement with each other, the treadle 31 is depressed and the trace is placed between the gage-bars at the rear end of the machine. The pressure upon the treadle is now relieved and the spring 28 pulls the presser-feet down upon the trace and holds it in position while it is being drawn forward through the machine. The scratchers form a slight groove or crease in the trace on the blackened or grain side of the leather, and the stitch-marking wheels run in this groove or crease and impress the points at which the awl is to be inserted in stitching the trace.

It will be obvious from the foregoing that the presser-feet being connected to the gagebars they are always set at the requireddistance from said gage-bars at any position at which the gage-bars may be adjusted.

frames, scratching and stitch-marking tools adjustable in said frames, gage-bars laterally adjustable on said guide-frames, presser-feet pivoted to said gage-bars, and means for rais- 7 in g and depressing said presser-feet, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN V. STONE. Witnesses:

T. R. TOBIASON, ABE EoKEL. 

